|The TELESYNC TSI-2069
E1 ISDN Termination Unit can be used in three different modes.
Test Mode: The
TSI-2069 provides a dial-up means of automatically looping back
or generating BERT patterns on any or all of the 30 DS-0 B channels
in an E1 ISDN data stream. The ISDN Termination Unit can be used
to test Nx56/64 kb/s, H0, H11, and H12. The TSI-2069 uses the ISDN
D-channel to accept or originate calls using Q.931 protocol. In
addition to call termination, call origination and BERTS measurements,
the TSI-2069 captures up to 1000 D-channel messages and saves them
in a log file.
Thru Mode: The
TSI-2069 can be installed in the customer E1 ISDN line (either central
office or customer location) to monitor the bidirectional D-channel
protocol. Access and control is through the RS-232C interface, Ethernet
interfaces or dialed up through a B-channel using a TSI-2069 or
Cross Connect Mode:
The TSI-2069 functions as a network element to terminate the Switch
(Network) D-channel and cross connect the Network calls to the DXC
(Terminal) E1 based on called phone numbers. The TSI-2069 can also
perform Mode 1 bonding of the incoming calls before cross connecting.
The Cross Connect capability is used to interface ISDN dial-up services
to packet or fractional E1 networks.
Monitor Mode: The
TSI-2069 functions as a two channel Protocol Analyzer connected
to the Digital Cross Connect (DCS) in the C.O. The PRI from the
ISDN switch and the CPE are bridged into the TSI-2069. The Monitor
Mode is used to capture, log and analyze the D-Channel protocol
transactions from the Switch and the Customer directions. This is
a useful mode when the customer is having problems originating and/or
Overview & Features